Ca. 100 x 75 mm. ff. 78 (penultimate blank leaf canceled, final leaf pasted-down). Bound in contemporary blind-stamped polished brown leather over wooden boards, sewn on two bands. Intact alum tawed medieval bookmark consisting of 4 woven strands sewn together at the top. Vestiges of a strap-and-pin fastening, with the strap missing. Each page has 3 lines of text and music in Hufnagel notation on four-line stave.
The colophon reveals that the present pocket processional for major feasts was written in 1460 by Wilhelm Ketheller, monk of the Cistercian Monastery at Herrenalb in Baden Württemberg, for his beloved sister Dorothy, a nun at the Cisterian Abbey of Lichtenthalm in Baden-Baden, less than 10 miles southwest of Herrenalb, and about 25 miles northeast of Strasburg. There is text and music for the feasts of the Purification (f. 1v), Palm Sunday (f. 16v), ‘Duo sorores in ecclesia’ specified before the hymn ‘Gloria laus et honor …’, f. 31, Ascension (f. 38r), Corpus Christi (f. 47v), Assumption of the Virgin (f. 60r), a colophon (f.76r), and a creed (f. 76v).
The work was in a private collection in Switzerland since the 1960s.